Preparation and Characterization of PAni‐PMMA Dispersions

Medeiros, Djalma; Neto, C.G. da Trindade; Santos, D. E. S. dos; Pavinatto, Felippe J.; Santos, David S. dos; Oliveira, Osvaldo N.; Job, Aldo Eloízo; Giacometti, J.A.; Dantas, Tereza Neuma de Castro; Pereira, M.R.; Fonseca, J. L. C.

doi:10.1081/dis-200049560

Cited by 9 publications

(1 citation statement)

References 36 publications

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“…AFM measurements were employed by Medeiros et al [49] to investigate the morphology of blends of PANI and poly(methacrylic acid) (PMMA), prepared using a two-stage core-shell particle synthesis. In the first step, the acrylic latex was obtained, after which PANI was deposited and seemed to destroy the regularity of the primary acrylic latex particles.…”

Section: Structures Containing Nanoparticles and Nanofibersmentioning

confidence: 99%

Scanning Probe Microscopy as a Tool Applied to Agriculture

Leite

Manzoli

Herrmann

et al. 2009

Scanning Probe Microscopy in Nanoscience and Nanotechnology

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The control of materials properties and processes at the molecular level inherent in nanotechnology has been exploited in many areas of science and technology, including agriculture where nanotech methods are used in release of herbicides and monitoring of food quality and environmental impact. Atomic force microscopy (AFM) and related techniques are among the most employed nanotech methods, particularly with the possibility of direct measurements of intermolecular interactions. This chapter presents a brief review of the applications of AFM in agriculture that may be categorized into four main topics, namely thin films, research on nanomaterials and nanostructures, biological systems and natural fibers, and soils science. Examples of recent applications will be provided to give the reader a sense of the power of the technique and potential contributions to agriculture.

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Section: Structures Containing Nanoparticles and Nanofibersmentioning

confidence: 99%

Scanning Probe Microscopy as a Tool Applied to Agriculture

Leite

Manzoli

Herrmann

et al. 2009

Scanning Probe Microscopy in Nanoscience and Nanotechnology

View full text Add to dashboard Cite

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Derivatives of biomacromolecules as stabilizers of aqueous alumina suspensions

Cerrutti

Lamas

Britto

et al. 2010

J of Applied Polymer Sci

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The stabilization of alumina suspensions is key to the development of high-performance materials for the ceramic industry, which has motivated extensive research into synthetic polymers used as stabilizers. In this study, mimosa tannin extract and a chitosan derivative, that is, macromolecules obtained from renewable resources, are shown to be promising to replace synthetic polymers, yielding less viscous suspensions with smaller particles and greater fluidity, that is, more homogeneous suspensions that may lead to better-quality products. The functional groups of tannin present in mimosa extract and N,N,N-trimethylchitosan (TMC) are capable of establishing interactions with the alumina surface, thus leading to repulsion between the particles mainly due to steric and electrosteric mechanisms, respectively. The stabilization of the suspension induced by either TMC or mimosa tannin was confirmed by a considerable decrease in viscosity and average particle size, in comparison with alumina suspensions without stabilizing agents. The viscosity/average particle size decreased by 49/84% and 52/87% for suspensions with TMC and mimosa tannin, respectively. In addition, the increase in the absolute zeta potential upon addition of either TMC or mimosa tannin extract, especially at high pHs, points to an increased stability of the suspension. The feasibility of using derivatives of macromolecules from renewable sources to stabilize aqueous alumina suspensions was therefore demonstrated.

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Improvement of the structural and electrical properties of PMMA/PANI-MA blends synthesized by interfacial in situ polymerization in a continuous organic phase

Hamlaoui

Naar

2020

Polym. Bull.

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Preparation and Characterization of PAni‐PMMA Dispersions

Cited by 9 publications

References 36 publications

Scanning Probe Microscopy as a Tool Applied to Agriculture

Scanning Probe Microscopy as a Tool Applied to Agriculture

Derivatives of biomacromolecules as stabilizers of aqueous alumina suspensions

Improvement of the structural and electrical properties of PMMA/PANI-MA blends synthesized by interfacial in situ polymerization in a continuous organic phase

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